{Silk-cotton tree} (Bot.), a name for severaltropical trees
of the genera {Bombax} and {Eriodendron}, and belonging to
the order {Bombace[ae]}. The trees grow to an immense
size, and have their seeds enveloped in a cottony
substance, which is used for stuffing cushions, but can
not be spun.

{Silk grass} (Bot.), a kind of grass ({Stipa comata}) of the
Western United States, which has very long silky awns. The
name is also sometimes given to various species of the
genera {Aqave} and {Yucca}.

{Silk moth} (Zo["o]l.), the adult moth of any silkworm. See
{Silkworm}.

{Silk shag}, a coarse, rough-woven silk, like plush, but with
a stiffer nap.